多糖生物基絮凝剂的最新进展。
Recent advances in polysaccharide bio-based flocculants.
机构信息
Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College St., Toronto, Ontario M5S 3E5, Canada.
Department of Chemical Engineering and Applied Chemistry, University of Toronto, 200 College St., Toronto, Ontario M5S 3E5, Canada; Faculty of Forestry, University of Toronto, 33 Willcocks St., Toronto, Ontario M5S 3B3, Canada.
出版信息
Biotechnol Adv. 2018 Jan-Feb;36(1):92-119. doi: 10.1016/j.biotechadv.2017.10.002. Epub 2017 Oct 7.
Natural polysaccharides, derived from biomass feedstocks, marine resources, and microorganisms, have been attracting considerable attention as benign and environmentally friendly substitutes for synthetic polymeric products. Besides many other applications, these biopolymers are rapidly emerging as viable alternatives to harmful synthetic flocculating agents for the removal of contaminants from water and wastewater. In recent years, a great deal of effort has been devoted to improve the production and performance of polysaccharide bio-based flocculants. In this review, current trends in preparation and chemical modification of polysaccharide bio-based flocculants and their flocculation performance are discussed. Aspects including mechanisms of flocculation, biosynthesis, classification, purification and characterization, chemical modification, the effect of physicochemical factors on flocculating activity, and recent applications of polysaccharide bio-based flocculants are summarized and presented.
天然多糖来源于生物质原料、海洋资源和微生物，作为合成聚合物产品的良性和环保替代品，引起了人们的极大关注。除了许多其他应用外，这些生物聚合物正在迅速成为去除水和废水中污染物的有害合成絮凝剂的可行替代品。近年来，人们致力于提高多糖生物基絮凝剂的生产和性能。本文综述了多糖生物基絮凝剂的制备和化学改性及其絮凝性能的最新研究进展。讨论了絮凝机制、生物合成、分类、纯化和表征、化学改性、物理化学因素对絮凝活性的影响以及多糖生物基絮凝剂的最新应用等方面。
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